Buy.com via eBay offers the Western Digital 2TB Elements Portable USB 3.0 External Hard Drive, model no. WDBU6Y0020BBK-NESN, for $79.99 with free shipping. That's tied with our September mention and the lowest total price we could find now by $10. It features a data transfer rate of 5Gbps and backwards compatibility with USB 2.0. Deal ends November 3 at 11 am ET.